CN102271217A - Infrared speed dome capable of automatically regulating brightness of infrared lamp and realization method - Google Patents
Infrared speed dome capable of automatically regulating brightness of infrared lamp and realization method Download PDFInfo
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- CN102271217A CN102271217A CN 201110009325 CN201110009325A CN102271217A CN 102271217 A CN102271217 A CN 102271217A CN 201110009325 CN201110009325 CN 201110009325 CN 201110009325 A CN201110009325 A CN 201110009325A CN 102271217 A CN102271217 A CN 102271217A
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Abstract
The invention discloses an infrared speed dome capable of automatically regulating the brightness of an infrared lamp and a realization method. The infrared speed dome capable of automatically regulating the brightness of the infrared lamp comprises a shooting module, a light-emitting diode (LED) lamp bank, an LED driving module and an image processor, wherein the shooting module, the image processor, the LED driving module and the LED lamp bank are sequentially connected; and the image processor is used for reading an amplification factor of the shooting module and outputting a corresponding pulse width modulation (PWM) signal according to the amplification factor of the shooting module to make the LED driving module output corresponding driving current. In the infrared speed dome and the realization method, the image processor reads the amplification factor of the shooting module, outputs the corresponding PWM signal according to the amplification factor of the shooting module and regulates the current of the LED driving module, thereby regulating the brightness of LED lamps; moreover, the brightness of the LED lamps is increased along with the increasing of the amplification factor of a lens of the shooting module to reduce the over-exposure of the shooting module, thereby enabling the infrared speed dome to shoot clear pictures.
Description
Technical field
The present invention relates to the safety monitoring technical field, infrared clipping the ball and its implementation of the brightness of particularly a kind of automatic adjusting infrared lamp.
Background technology
Along with science and technology development, infrared monitoring technique has been widely applied to every field, and present infrared clipping the ball generally needs day and night to monitor, and infrared clipping the ball is when night monitoring, generally need to open infrared lamp, send the infrared light auxiliary camera by infrared lamp and expose to photographic images.
At present, infrared clipping the ball generally adopts bullet cut LED(light emitting diode, light-emitting diode) as infrared lamp, see also Fig. 1, the light of its luminous fuse radiation of traditional bullet cut LED, directly by behind a part of light of the resin lens control in the place ahead, launch again, this reflection mode generally can only be controlled 1/3 light source, so the electric current of this bullet cut LED is very little to the influence of its brightness, the brightness that is to say this class LED can not change with the variation of its electric current, so this bullet cut LED only has two kinds of mode of operations: open or close.
Infrared like this clipping the ball is when monitoring nearer object, if the brightness of infrared lamp is too high, cause the video camera overexposure easily, the image that video camera is taken turns white and can't obtain distinct image, and the brightness of infrared lamp can not realize by the adjusting of electric current.Therefore the brightness regulation technology of existing infrared clipping the ball and infrared lamp thereof also has to wait and improves and raising.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide infrared clipping the ball and its implementation of the brightness of a kind of automatic adjusting infrared lamp, can regulate the electric current of LED driver module according to the multiplication factor of shooting module, thereby regulate the brightness of LED lamp group.
In order to achieve the above object, the present invention has taked following technical scheme:
The infrared clipping the ball of a kind of automatic adjusting infrared lamp brightness, it comprises and is used to obtain the shooting module of video image and is used to send infrared light and the LED lamp group of auxiliary shooting module exposure, it is characterized in that, LED driver module that also comprises the keying that is used to control LED lamp group and the brightness of LED lamp group is regulated and the multiplication factor that is used to read the shooting module, and export corresponding pwm signal according to the multiplication factor of shooting module, make the image processor of LED driver module output respective drive electric current; Described shooting module, image processor, LED driver module and LED lamp group are connected successively.
The infrared clipping the ball of described automatic adjusting infrared lamp brightness, wherein, the multiplication factor grade of described shooting module comprises 10 grades, the output current of described LED driver module also relative set is 10 grades.
The infrared clipping the ball of described automatic adjusting infrared lamp brightness, wherein, described LED lamp group comprises 4 groups of LED lamps.
The infrared clipping the ball of described automatic adjusting infrared lamp brightness, wherein, each group LED lamp comprises 6 LED lamp.
The infrared clipping the ball of described automatic adjusting infrared lamp brightness, wherein, described LED lamp is a reflection-type LED lamp.
The infrared clipping the ball of described automatic adjusting infrared lamp brightness, wherein, it is the integrated chip of LPC2214 that image processor adopts model.
A kind of method of automatic adjusting infrared lamp brightness of infrared clipping the ball wherein, comprising:
Obtain video image in real time by the shooting module;
By image processor read the shooting module multiplication factor, and according to the shooting module multiplication factor export corresponding pwm signal;
The LED driver module is according to the brightness of described pwm signal output corresponding driving Current Regulation LED lamp.
The method of the automatic adjusting infrared lamp brightness of described infrared clipping the ball, wherein, the multiplication factor grade of described shooting module comprises 10 grades, the output current of described LED driver module also relative set is 10 grades, and makes the corresponding rising of its output current with the increase of multiplication factor of shooting module; Wherein:
When the multiplication factor of shooting module was 1 times, the electric current of described LED driver module output was 400mA;
When the multiplication factor of shooting module was 2 times, the electric current of described LED driver module output was 520mA;
When the multiplication factor of shooting module was 3 times, the electric current of described LED driver module output was 600mA;
When the multiplication factor of shooting module was 4 times, the electric current of described LED driver module output was 660mA;
When the multiplication factor of shooting module was 5 times, the electric current of described LED driver module output was 720mA;
When the multiplication factor of shooting module was 6 times, the electric current of described LED driver module output was 760mA;
When the multiplication factor of shooting module was 7 times, the electric current of described LED driver module output was 840mA;
When the multiplication factor of shooting module was 8 times, the electric current of described LED driver module output was 920mA;
When the multiplication factor of shooting module was 9 times, the electric current of described LED driver module output was 960mA;
When the multiplication factor of shooting module was greater than or equal to 10 times, the electric current of described LED driver module output was 1000mA.
The method of the automatic adjusting infrared lamp brightness of described infrared clipping the ball, wherein, described LED lamp group comprises 4 groups of LED lamps, and every group of LED lamp comprises 6 reflection-type LED.
Infrared clipping the ball and its implementation of automatic adjusting infrared lamp provided by the invention brightness, read the multiplication factor of shooting module by image processor, and according to the shooting module multiplication factor export corresponding pwm signal, adjust the electric current of LED driver module, thereby regulate the brightness of LED lamp, and, the brightness of LED lamp is also increased thereupon along with the increase of the multiplication factor of the camera lens of shooting module, reduced shooting module overexposure phenomenon, thereby made infrared clipping the ball photograph picture clearly.
Description of drawings
Fig. 1 is the schematic diagram of bullet cut LED reflection ray.
The structured flowchart of the infrared clipping the ball that Fig. 2 provides for the embodiment of the invention.
The circuit theory diagrams of the infrared clipping the ball that Fig. 3 provides for the embodiment of the invention.
Fig. 4 is the schematic diagram of reflection-type LED reflection ray.
Fig. 5 regulates the method flow diagram of infrared lamp brightness automatically for the infrared clipping the ball of the embodiment of the invention.
Embodiment
The invention provides infrared clipping the ball and its implementation of the brightness of a kind of automatic adjusting infrared lamp, clearer, clear and definite for making purpose of the present invention, technical scheme and effect, below with reference to accompanying drawing and give an actual example that the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 2 and Fig. 3, the infrared clipping the ball that the embodiment of the invention provides comprises shooting module 11, image processor 21, LED driver module 31 and LED lamp group 41.Described shooting module 11, image processor 21, LED driver module 31 and LED lamp group 41 are connected successively.
Wherein, infrared clipping the ball links to each other with the main frame of safety-protection system, is used to take the video pictures in its search coverage.Described shooting module 11 integrated camara modules are used for obtaining in real time video image, and show in the display of safety-protection system.Described LED lamp group 41 is used to send infrared light, and auxiliary shooting module 11 exposures.Described LED driver module 31 is connected with the PWM output port of image processor 21, it is subjected to the control of image processor 21, be used for driving LED lamp group 41 and light or extinguish, and when LED lamp group 41 is lighted, regulate the brightness of LED lamp group 41 according to the drive signal of image processing module.
Image processor 21 is connected with the shooting module by serial ports, be used to read the multiplication factor of shooting module 11, and according to the shooting module 11 multiplication factor export corresponding pwm signal (Pulse Width Modulation, pulse-width modulation), make LED driver module 31 output respective drive electric currents, thereby regulate the brightness of LED lamp group 41.
Please continue to consult Fig. 3, it is the constant-current driving IC of MBI1801 that described LED driver module 31 adopts model.Image processor 21 is a single-chip microcomputer, it adopts model is the integrated chip of LPC2214, regulates the brightness of infrared lamp by obtaining the multiplication factor of camera lens in the shooting module, finally makes not overexposure of shooting module 11, obtain video image clearly, thereby reach the purpose of video monitoring.
In the present embodiment, the infrared lamp that described LED lamp group 41 adopts is a reflection-type LED lamp, sees also Fig. 4, and reflection-type LED(Single Reflection LED is called for short SRLED) be different from traditional bullet cut LED.The principle of luminosity of reflection-type LED is the speculum that at first light of luminous fuse is transmitted into the back, again by the may command light source of mirror reflects to the front, the light of reflection-type LED emission can both be used effectively more than 90%, therefore its brightness ratio bullet cut LED is high more than 2.5 times, it is novel infrared lamp, is a kind of new application in the monitoring field.
Preferably, described LED lamp group 41 comprises 4 groups of LED lamps, and each group LED lamp comprises 6 reflection-type LED lamps.See also Fig. 3, constant-current driving IC(is a LED driver module 31) scope of adjustable continuous current is 0～1.2A.In the specific implementation, the total adjustable current scope of these 4 groups of infrared lamps is set to 0～1A, so every component is 0～250MA to current range, and reflection-type LED can send also respective change of infrared light intensity along with the size variation of electric current, present embodiment is divided into N grade with the electric current of infrared lamp, but the grade of each electric current is corresponding with the multiplication factor grade of shooting module 11.
In the present embodiment, the multiplication factor of described shooting module 11 is set to 10 grades; The output current of described LED driver module 31 also relative set is 10 grades, and the increase of multiplication factor with shooting module 11 makes the corresponding rising of its output current, the brightness of infrared lamp changes with the variation of the multiplication factor of shooting module like this, make the most effective of infrared lamp, save the energy, also prolonged the useful life of infrared lamp simultaneously.
Based on above-mentioned infrared clipping the ball, the embodiment of the invention is also corresponding to provide a kind of infrared clipping the ball to regulate the method for infrared lamp brightness automatically, sees also Fig. 5, and described method comprises:
S110, by the shooting module obtain video image in real time;
S120, by image processor read the shooting module multiplication factor, and according to the shooting module multiplication factor export corresponding pwm signal;
S130, LED driver module are exported the brightness of corresponding driving Current Regulation LED lamp according to described pwm signal.
Wherein, the multiplication factor grade of described shooting module comprises 10 grades, and the output current of described LED driver module also relative set is 10 grades, and in the present embodiment, described LED lamp group comprises 4 groups of LED lamps, and every group of LED lamp comprises 6 reflection-type LED.
The corresponding relation of the multiplication factor grade of the infrared clipping the ball that the embodiment of the invention provides and the electric current of LED lamp is as follows:
When the multiplication factor of shooting module was 1 times, the electric current of image processor control LED driver module output was 400mA, and the electric current of every group of LED lamp is 100mA; When the multiplication factor of shooting module was 2 times, the electric current of image processor control LED driver module output was 520mA, and the electric current of every group of LED lamp is 130mA; When the multiplication factor of shooting module was 3 times, the electric current of image processor control LED driver module output was 600mA, and the electric current of every group of LED lamp is 150mA; When the multiplication factor of shooting module was 4 times, the electric current of image processor control LED driver module output was 660mA, and the electric current of every group of LED lamp is 165mA; When the multiplication factor of shooting module was 5 times, the electric current of image processor control LED driver module output was 720mA, and the electric current of every group of LED lamp is 180mA; When the multiplication factor of shooting module was 6 times, the electric current of image processor control LED driver module output was 760mA, and the electric current of every group of LED lamp is 190mA; When the multiplication factor of shooting module was 7 times, the electric current of image processor control LED driver module output was 840mA, and the electric current of every group of LED lamp is 210mA; When the multiplication factor of shooting module was 8 times, the electric current of image processor control LED driver module output was 920mA, and the electric current of every group of LED lamp is 230mA; When the multiplication factor of shooting module was 9 times, the electric current of image processor control LED driver module output was 960mA, and the electric current of every group of LED lamp is 240mA; When the multiplication factor of shooting module was greater than or equal to 10 times, the electric current of image processor control LED driver module output was 1000mA, and the electric current of every group of LED lamp is 250mA.
A multiplication factor of the corresponding shooting of LED lamp group current class module like this, when the multiplication factor of shooting module changed, the electric current of LED lamp group is respective change also, made not overexposure of shooting module, thereby made infrared clipping the ball photograph picture clearly.
Should be noted that, the multiplication factor of shooting module also can be set to other multiplication factor grade, the electric current of the quantity of the group number of LED lamp, each group LED lamp and each group LED lamp also can be provided with according to the installation environment of infrared clipping the ball reality, as long as the total electric current of infrared lamp is less than or equal to the maximum output current of constant-current driving IC.
In sum, the present invention reads the multiplication factor of shooting module by image processor, and according to the shooting module multiplication factor export corresponding pwm signal, adjust the electric current of LED driver module, thereby regulate the brightness of LED lamp, and, the brightness of LED lamp is also increased thereupon along with the increase of the multiplication factor of the camera lens of shooting module, reduced shooting module overexposure phenomenon, thereby made infrared clipping the ball photograph picture clearly.The brightness of infrared lamp simultaneously can change with the variation of the multiplication factor of shooting module, makes the efficient of infrared lamp reach the highest, has saved the energy, has prolonged the useful life of infrared lamp, and has reduced the heat that infrared lamp produces.
Characteristics such as the infrared clipping the ball that the embodiment of the invention provides also has compact conformation, and cost is low are fit to promote the use of.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. infrared clipping the ball of automatically regulating infrared lamp brightness, it comprises and is used to obtain the shooting module of video image and is used to send infrared light and the LED lamp group of auxiliary shooting module exposure, it is characterized in that, LED driver module that also comprises the keying that is used to control LED lamp group and the brightness of LED lamp group is regulated and the multiplication factor that is used to read the shooting module, and export corresponding pwm signal according to the multiplication factor of shooting module, make the image processor of LED driver module output respective drive electric current; Described shooting module, image processor, LED driver module and LED lamp group are connected successively.
2. the infrared clipping the ball of automatic adjusting infrared lamp according to claim 1 brightness is characterized in that, the multiplication factor grade of described shooting module comprises 10 grades, and the output current of described LED driver module also relative set is 10 grades.
3. the infrared clipping the ball of automatic adjusting infrared lamp according to claim 1 brightness is characterized in that, described LED lamp group comprises 4 groups of LED lamps.
4. the infrared clipping the ball of automatic adjusting infrared lamp according to claim 2 brightness is characterized in that, each group LED lamp comprises 6 LED lamp.
5. according to the infrared clipping the ball of claim 3 or 4 described automatic adjusting infrared lamp brightness, it is characterized in that described LED lamp is a reflection-type LED lamp.
6. the infrared clipping the ball of automatic adjusting infrared lamp according to claim 1 brightness is characterized in that, it is the integrated chip of LPC2214 that image processor adopts model.
7. the method for the automatic adjusting infrared lamp brightness of the described infrared clipping the ball of claim 1 is characterized in that, comprising:
Obtain video image in real time by the shooting module;
By image processor read the shooting module multiplication factor, and according to the shooting module multiplication factor export corresponding pwm signal;
The LED driver module is according to the brightness of described pwm signal output corresponding driving Current Regulation LED lamp.
8. the method for the automatic adjusting infrared lamp brightness of infrared clipping the ball according to claim 7, it is characterized in that, the multiplication factor grade of described shooting module comprises 10 grades, the output current of described LED driver module also relative set is 10 grades, and makes the corresponding rising of its output current with the increase of multiplication factor of shooting module; Wherein:
When the multiplication factor of shooting module was 1 times, the electric current of described LED driver module output was 400mA;
When the multiplication factor of shooting module was 2 times, the electric current of described LED driver module output was 520mA;
When the multiplication factor of shooting module was 3 times, the electric current of described LED driver module output was 600mA;
When the multiplication factor of shooting module was 4 times, the electric current of described LED driver module output was 660mA;
When the multiplication factor of shooting module was 5 times, the electric current of described LED driver module output was 720mA;
When the multiplication factor of shooting module was 6 times, the electric current of described LED driver module output was 760mA;
When the multiplication factor of shooting module was 7 times, the electric current of described LED driver module output was 840mA;
When the multiplication factor of shooting module was 8 times, the electric current of described LED driver module output was 920mA;
When the multiplication factor of shooting module was 9 times, the electric current of described LED driver module output was 960mA;
When the multiplication factor of shooting module was greater than or equal to 10 times, the electric current of described LED driver module output was 1000mA.
9. the method for the automatic adjusting infrared lamp brightness of infrared clipping the ball according to claim 7 is characterized in that, described LED lamp group comprises 4 groups of LED lamps, and every group of LED lamp comprises 6 reflection-type LED.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591101A (en) * | 2012-02-07 | 2012-07-18 | 广东美的电器股份有限公司 | Camera supplementary lighting device and control method thereof |
| CN102821250A (en) * | 2012-08-23 | 2012-12-12 | 青岛海信网络科技股份有限公司 | Automatic dimming method and device of infrared camera |
| CN105391951A (en) * | 2014-09-05 | 2016-03-09 | 宇龙计算机通信科技(深圳)有限公司 | Method, device and terminal for displaying image |
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| CN201185452Y (en) * | 2008-03-31 | 2009-01-21 | 深圳市贝斯得电子有限公司 | Infrared high speed ball |
| CN201479246U (en) * | 2009-07-30 | 2010-05-19 | 梅红坤 | Infrared high-speed ball rotation device |
| CN201491121U (en) * | 2009-07-30 | 2010-05-26 | 梅红坤 | Infrared high-speed sphere circulating air heat-conducting device |
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2011
- 2011-01-17 CN CN201110009325A patent/CN102271217B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201185452Y (en) * | 2008-03-31 | 2009-01-21 | 深圳市贝斯得电子有限公司 | Infrared high speed ball |
| CN201479246U (en) * | 2009-07-30 | 2010-05-19 | 梅红坤 | Infrared high-speed ball rotation device |
| CN201491121U (en) * | 2009-07-30 | 2010-05-26 | 梅红坤 | Infrared high-speed sphere circulating air heat-conducting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102591101A (en) * | 2012-02-07 | 2012-07-18 | 广东美的电器股份有限公司 | Camera supplementary lighting device and control method thereof |
| CN102821250A (en) * | 2012-08-23 | 2012-12-12 | 青岛海信网络科技股份有限公司 | Automatic dimming method and device of infrared camera |
| CN102821250B (en) * | 2012-08-23 | 2016-02-24 | 青岛海信网络科技股份有限公司 | The automatic light modulating method of thermal camera and device |
| CN105391951A (en) * | 2014-09-05 | 2016-03-09 | 宇龙计算机通信科技(深圳)有限公司 | Method, device and terminal for displaying image |
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